Latch member housing



Oct. 1954 R|VARD LATCH MEMBER HOUSING Filed Dec. 10, 1951 Al'exandei H. Rivard INVENTOR.

Patented Oct. 26, 1954 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates generally to builders hardware and more particularly to a window lock by means of which a sliding window may be held in adjusted position.

The primary object of the invention is to provide a window lock consisting of companion elements intended to be applied to a sliding window structure and by means of which the window may be locked either in a close position or in a plurality of ventilating positions.

Another object of this invention is to provide a window lock which is of very simple construction and may be economically manufactured.

Another object of this invention is to provide a window lock which may be economically manufactured in a variety of colors.

A further object of this invention is to provide a window lock of simple construction which may be formed of a readily obtainable material such as plastic.

These, together with various ancillary features and objects of the invention, which will later become apparent as the following description proceeds are obtained by the present invention, a preferred embodiment of which has been illustrated by way of example only in the accompanying drawings, wherein:

Figure 1 is a perspective view of the window lock forming the subject of this invention, the same being illustrated as being attached to a double hung window;

Figure 2 is a vertical transverse sectional view, taken substantially upon the plane indicated by the section line 22 of Figure 1; and

Figure 3 is a vertical transverse view, taken along the plane indicated by the section line 33 of Figure 2.

The lock of this invention is designed primarily for use with windows with glass sashes. With this thought in mind, it is readily seen that there is no positive manner of locking the windows against the entrance of a thief. However, if the windows are locked against opening, a thief is required to either jimmy the window open or break the glass. In either case, sufiicient noise will be made to place the occupants on guard.

The window lock of this invention is not intended to be a burglar-proof lock in that it is designed for use with windows having glass sashes. It is obvious that if one desires to enter a house, he merely breaks the window and then releases the lock. With this thought in mind, the window lock of this invention has been designed to resist the prying up of a window, and is intended to merely retard the entrance of a thief.

2 Referring now more specifically to the accompanying drawings, wherein like numerals designate similar parts throughout the various views. it will be seen that the novel window lock. of this invention is shown in Figure 1 as being applied to a conventional double hung window which is referred to generally by the reference numeral l0.

The double hung window I0 has a lower sash I2 and an upper sash [4, which are mounted in vertically sliding relation. Attached to the upper surface of the top rail l 6 of the sash I2 is a latching member generally referred to by reference numeral I8. Mounted on the side rail of the upper sash I4 is a keeper bar 22 which has its longitudinal axis mounted along the line of the latch member l8 when the lower window sash I2 is raised or lowered.

Referring now to Figure 2, it will beseen that the keeper member 22 consists of a flat bar 24 having therein a lower bolt receiving aperture 26, and a plurality of upper bolt receiving apertures 28. The plate 24 is also provided with a plurality of counter-sunk screw receiving holes in which are received screws 32 which secure the keeper member 22 to the side rail 20 of the upper sash [4.

The latch member l8 includes a housing 34 and a sliding bolt 36 mounted therein. The housing 34 includes a pair of spaced mounting blocks 38 having a tubular sleeve 40 extending therebetween and secured thereto. The mounting blocks 38 are each provided with a bore 42, the bores 42 being in alignment with eachother and having an axis common with the axis of the sleeve 40. The looking bolt 36 is slidably journaled in the bores 42 of the mounting block 38. As is clearly shown in Figure 2, the internal diameter of the sleeve 40 is much greater than the diameter of the bores 42 in the mounting blocks 38. Received within the sleeve 40 and around the bolt 36 is a spring 44 for actuating the locking bolt 36. The spiral spring 44 is maintained in compressed relation between one of the mounting blocks 38 and a transverse pin 46 carriedby the locking bolt 36, whereby the locking bolt is being continuously forced to the left as shown in Figure 2.

Referring now to Figure 3, it will be seen that the spring retaining pin 46 extends through the side walls of the sleeve 40 and the sleeve 40 is provided with a pair of longitudinally extending, diametrically opposed slots 48 in which the pin 46 is allowed to reciprocate. The locking member 18 is secured to the upper rail 16 of the lower window sash l2 by fasteners 50 which pass through apertures in shoulders 52 of the mounting blocks 38.

Again referring to Figure 2, it will be seen that the lower bolt receiving aperture 26 of the keeper member 22 is circular in cross section, and receives the bolt 36 to positively lock the lower sash l2 to the upper sash Hi. The upper bolt receiving apertures have an upper portion which is generally semi-circular in cross section and a lower portion which slopes downwardly and outwardly to provide a flat bolt engaging face 54. The looking bolt 36 is provided with a downwardly and inwardly curved surface 56 on its locking end. The locking bolt 38 is provided with a turned end to provide a handle 58.

When the window sashes I2 and M are in their closed positions as shown in Figures 1 and 2, in order to open the sash [2, the locking bolt 30 is gripped by the handle 58 and is pulled clear of the bolt receiving aperture 26 against the compression of the spring 44. After the locking bolt 35 is cleared of the bolt receiving aperture 26, the window sash 12 may be raised to any desired position. If it is desired that the lower window sash 12 be raised only slightly to allow ventilation, the sash I2 israised until locking bolt 36 is in alignment with the desired upper bolt receiving apertures 28. Due to the similar circular cross-section of the upper portion of the upper bolt receiving apertures 28, it is readily seen that the window sash l2 cannot be raised after the lock and bolt 35 has engagedv in one of the upper bolt receiving apertures 28. When it is desired to either lower or close the window sash 12, the window sash l2 ismerely moved downwardly the curved end 56 of the locking bolt 36 engaging the downwardly and outwardly sloping surface 54 of the bolt receiving aperture 23 whereby the locking bolt 36 is forced to the right in Figure 2 to a position clear of the keeper member 22. Since the keeper member 22 does not extend to the upper travel of the bolt 38, the upper edge of the plate 24 is rounded as indicated at 60 to allow the locking bolt 36 to ride thereover.

In view of the foregoing, it is readily seen that the construction of the window lock of this invention is'such that all of the elements with the exception of the spring 44 and the pin 46, may be made of plastic or some other readily obtainable material. Due to the fact that plastic is easily worked, a plastic window lock of this type may be more economically manufactured than a metal window lock of a similar nature. The use of plastic to form the window lock has the added advantage of forming the window lock of a material which comes in assorted colors, whereby the window lock may be of a color which blends with the decoration in the room in which it is used.

From the foregoing, the construction and operation of the device will be readily understood, and further'explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art after a consideration of the foregoing specification and accompanying drawings, it is not desired to limit the invention to the exact construction shown and described, nor is it desired to limit the invention to a double hung window and as it is designed for use with any type of sliding window, all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claim.

Having described the invention, what is claimed as new is: 1

In a plastic latch member, a housing comprising an elongated sleeve extending between and integral with a pair of mounting blocks, said mounting blocks being relatively thick and extending transversely outwardly of said sleeve, vertical passages in said mounting blocks on op- Y posite sides of said sleeve, said mounting blocks being adapted to be secured to a window by fasteners passing through said passages, said mounting blocks having bores therethrough axially aligned with the bore of said sleeve, said sleeve and said mounting blocks being adapted to receive a latch bolt with said mounting blocks in guiding engagement therewith, the bore of said sleeve being of a larger cross section than the bores of said mounting blocks to facilitate the re ception of a spring.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,075,828 Hunciker Oct. 14, 1913 1,272,900 Berman July 16, 1918 1,516,995 Trigueiro Nov. 25, 1924 1,812,288 Drapeau June 30, 1931 2,499,165 Roethel Feb. 28, 1950 2,518,207 Wagner Aug. 8, 1950 2,523,559 Couture Sept. 26, 1950 

